Leaf and petiole anatomy of some grapevine (Vitis vinifera L.) cultivars grown in Türkiye

The grapevine has been cultivated in almost every region of the world due to its commercial value and as a spread source of food, all which has allowed diversification of grape types. The distinction of grapevine varieties is usually made by examining their morphological features. However, it is known that anatomical studies are very valuable in plant taxonomy. In this study, the anatomical features of leaf and petiole sections were examined using three set of samples for eight different grapevine varieties (i.e., 'Öküzgözü', 'Narince', 'Syrah', 'Boğazkere', 'Kalecik Karası', 'Viognier', 'Malbec' and 'Sauvignon Blanch') grown in the vineyards of Toklümen village in the center of Kırşehir Province. Leaf blade sections are generally seen to consist of upper epidermis, palisade parenchyma, spongy parenchyma and lower epidermis layers. On the other hand, the petiole has a five-lobed appearance in cross-section, drawing attention to the accessory vascular bundle seen from the adaxial region along with large vascular bundles above them. According to the findings, it was determined that although the anatomical features may vary according to environmental effects, there were significant differences in different cultivars growing in the same area.